CHT Class Reference

Helper class for decoding/encoding lcio::CalorimeterHit types for the ILD detector. More...

#include <CalorimeterHitType.h>

Public Types
enum	CaloType { em = 0, had = 1, muon = 2 }
	calorimeter types
enum	CaloID {   unknown = 0, ecal = 1, hcal = 2, yoke = 3,   lcal = 4, lhcal = 5, bcal = 6 }
	calo ids - specific to ILD
enum	Layout {   any = 0, barrel = 1, endcap = 2, plug = 3,   ring = 4 }
	calo layout / subdetector

Public Member Functions
	CHT (int type)
	C'tor for initialization from CalorimeterHit::getType()
	CHT (CaloType c, CaloID n, Layout l, unsigned layer)
	C'tor for encoding the calo type inforamtion.
CaloType	caloType () const
	calorimeter type: CHT::em , CHT::had, CHT::muon
CaloID	caloID () const
	calo ID - see enum CaloID for allowed values
Layout	layout () const
	calo layout - see enum layout for allowed values
unsigned	layer () const
	calo layer of hit
bool	is (CaloType t) const
bool	is (CaloID n) const
bool	is (Layout l) const
	operator int () const
	automatic conversion to int
int	toInt () const
	explicit conversion to int

Protected Attributes
int	_type

Static Protected Attributes
static const int	fCaloType = 1
static const int	fCaloID = 10
static const int	fLayout = 1000
static const int	fLayer = 10000

Detailed Description

Helper class for decoding/encoding lcio::CalorimeterHit types for the ILD detector.

The encoding is: caloType + 10 * caloID + 1000 * layout + 10000 * layerNum
(see enums: CaloType, CaloID and Layout for possible values).
Example usage:

   lcio::CalorimeterHit* cHit = .... ;

   // set the type (e.g. in digitization ) 
   cHit->setType( CHT( CHT::em ,  CHT::ecal , CHT::plug , 12 ) ) ;

   ...

   CHT cht = cHit->getType() ;

   //   sum energies for electromagentic, hadronic and tailcatcher:
   if( cht.is( CHT::em ) ) 
        e_em +=  cHit->getEnergy() ;
   else 
     if ( cht.is(CHT::had ) ) 
        e_had += cHit->getEnergy() ;
     else
        e_muon += cHit->getEnergy() ;

   // use only EcalPlug hits:
   if( cht.is( CHT::ecal) && cht.is( CHT::plug) )

   // get the layer number (e.g. for calibration or clustering) 
   unsigned l = cht.layer() ; 
   // or directly :
   unsigned l = CHT(  cHit->getType() ).layer()  ;

   // detailed print:
   std::cout <<  CHT(  cHit->getType() ) << std::endl ;

F.Gaede, DESY, 12/2008

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The documentation for this class was generated from the following file:

• CalorimeterHitType.h